The role of gamma band oscillations and synchrony on rubber hand illusion and crossmodal integration
The role of gamma band oscillations and synchrony on rubber hand illusion and crossmodal integration
复制标题
DOI：
10.1016/j.bandc.2008.05.001
复制
发表时间：
2009-02-01
影响因子：
2.5
通讯作者：
Ohira, Hideki
中科院分区：
文献类型：
--
作者：
Kanayama, Noriaki;Sato, Atsushi;Ohira, Hideki
橡胶手错觉代表了当相关的视觉触觉刺激呈现给真实的手和假手时，在自己的手的错误定位过程中的所有错觉体验。视触整合过程似乎引起了这种错觉;许多研究揭示了相应的大脑活动。本研究通过测量脑电，探讨了橡胶手错觉对跨模态整合过程的影响。错觉强度越小的被试，其反应时（RT）的一致性效应越大，顶叶零电极（Pz）的功率增加越大，γ波活动的极间同步性越小。另一方面，经历过更强烈幻觉的参与者表现出更大的电极间同步性。结果表明，顶叶区γ波活动反映了视触整合过程，其同步性导致了错觉强度。版权所有（C）2008 Elsevier Inc. All rights reserved.
The rubber hand illusion represents all illusory experience during the mislocalization of own hand when correlated visuotactile stimuli are presented to the actual and fake hands. The visuotactile integration process appears to cause this illusion; the corresponding brain activity was revealed in many Studies. In this Study, We investigated the effect of the rubber hand illusion on the crossmodal integration process by measuring EEG. The participants who experienced less intensive illusion showed greater Congruency effect on reaction time (RT), greater power increase at the parietal zero electrode (Pz) and smaller interelectrode synchrony of the gamma band activity. On the other hand, the participants who experienced more intense illusion showed greater interelectrode synchrony. The results suggested that the gamma band activity in the parietal area reflects the visuotactile integration process and that its synchrony causes the illusory intensity. Crown copyright (C) 2008 Published by Elsevier Inc. All rights reserved.